Single-motor-driven pure electric operation type refitted vehicle chassis

The invention relates to a novel pure electric operation type refitted vehicle chassis driven by a single motor. The chassis comprises a cab, a power battery, a main driving system, a cooling system, a charging system, a low-voltage storage battery and an upper auxiliary driving system which are arranged on the chassis. The upper auxiliary driving system and the chassis share and utilize resources in the aspects of driving and electrical control; the chassis walking driving system and the upper auxiliary driving system share one set of motor; the upper auxiliary driving system can take electricity through a junction box to drive an auxiliary driving motor and a lighting system through a reserved interface of the chassis all-in-one controller; by means of the scheme that a power grid is charged through a vehicle-mounted charger, the auxiliary drive motor can work or a power battery can be charged; the top-mounted auxiliary drive system can control a main drive motor, a power takeoff, an AMT and an auxiliary dr